NEW ROUND OF IN VITRO FOR DESPERATE J.LO

Jennifer Lopez has been dealt another crushing blow in her quest for motherhood.

The 36-year-old Latin beauty underwent in vitro fertilization (IVF) with a Beverly Hills specialist in mid-October – only to get the heartbreaking news from an ultrasound earlier this month that the procedure had failed.

But Jennifer’s so determined to have a baby with her husband, singer Marc Anthony, that she’s going to undergo the grueling procedure again, says a source close to the star.

"She’s tried everything else without success, and though IVF has failed once, she knows it’s the only hope left for her to get pregnant," said the source.

"Marc is supporting Jennifer all the way. He knows how much she wants to be a mother."